In Mario & Luigi: Bowser's Inside Story, the clothing mechanic is significantly different compared to its predecessors. There are several different clothing types available: overalls, gloves, socks, boots, and accessories for Mario and Luigi, and shells, arm bands, rings, and fangs for Bowser. The maximum number of articles of clothing that a character may equip is dependent on rank – three is the maximum, but two of a type of clothing can never be equipped simultaneously. Since the function of badges has also been altered, most of badges' old functions are now applied to articles of clothing.

1There is a ? block somewhere in Toad Town containing this as well as it being available in a shop.2Rounded up.3Also available via any Shop Block; certain things become available only when player defeats certain bosses.4These would be the "tiny" enemies Mario and Luigi battle formally, but Bowser simply knocks over.